Despite Robin Thicke’s many —- and we mean many—- efforts to save his marriage, Paula Patton is making the separation from her estranged husband official.

The actress has filed for divorce from the R&B star, citing irreconcilable differences as the reason for the split. She is also requesting joint legal and physical custody of their four-year-old son, Julian.

The couple, who wed in 2005 after meeting 22 years prior, separated after reports of Thicke’s infidelity spread online. He has since made it his mission to win Patton back with several public pleas live in concert and through Facebook. And on his latest release, even wrote a song about his troubled marriage —- the aptly-titled “Get Her Back.”;

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After announcing their separation, Thicke told People magazine, “we will always love each other and be best friends, however, we have mutually decided to separate at this time.”

The divorce between Thicke and Patton is said to be “harmonious.”;